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        <p>上周作业<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B1%5D.png"><br>推荐放大5倍。<br>学员问题：一个牙尖都没有，如何确定牙尖位置？用邻牙和牙弓的位置。<br>天然的下颌第一磨牙——外形轮廓<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B2%5D.png"></p>
<p>远中尖偏远中。<br>下颌第一磨牙——牙尖<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B3%5D.png"><br>颊尖到舌尖符合AFG第一定律，5.5mm<br>近中到远中尖距离：5.5mm<br>远舌到远中尖，6mm<br>远中尖到颊沟距离，6mm<br>中央点隙为MB-DL与ML-D的连线交点。<br>下颌第一磨牙——边缘嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B4%5D.png"><br>连线与外形轮廓相似。<br>下颌第一磨牙——主嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B5%5D.png"><br>均朝向中央点隙，除了MB.<br>下颌第一磨牙——窝沟<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B6%5D.png"><br>天然下颌第二磨牙——牙尖<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B7%5D.png"><br>颊尖到舌尖：5.5mm<br>MB到DB，ML到DL，6mm<br>下颌第二磨牙——内部结构<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B8%5D.png"><br>中央窝：四个牙尖对角线的交叉点。<br>前磨牙组<br>上颌第一前磨牙——外形轮廓<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B9%5D.png"><br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B10%5D.png"><br>颊尖到舌尖：5.5mm<br>在牙弓中的位置<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B11%5D.png"><br>边缘嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B12%5D.png"><br>近中牙尖嵴和远中牙尖嵴，与外形轮廓类似。<br>近中有近中沟。<br>主嵴<br>副嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B13%5D.png"><br>沟<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B14%5D.png"><br>上颌第二前磨牙——外形轮廓<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B15%5D.png"><br>曲率不明显<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B16%5D.png"><br>边缘嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B17%5D.png"><br>包含近远中牙尖嵴和近远中边缘嵴。<br>主嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B18%5D.png"><br>副嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B19%5D.png"><br>窝沟<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B20%5D.png"><br>天然上颌第二前磨牙的另外的形态<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B21%5D.png"><br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B22%5D.png"><br>上4，上5的区别，上4外形轮廓较锐利，上5较圆钝。窝沟形态近似H形。<br>下颌第一前磨牙——外形轮廓<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B23%5D.png"><br>近中曲率明显，远中曲率较圆缓。<br>牙尖<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B24%5D.png"><br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B25%5D.png"><br>颊舌尖距离4.5mm<br>边缘嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B26%5D.png"><br>主嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B27%5D.png"><br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B28%5D.png"></p>
<p>颊舌尖高度相差大。<br>沟<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B29%5D.png"><br>沟不明显，有两个窝。<br>下颌第二前磨牙(Y形)——外形轮廓<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B30%5D.png"><br>牙尖<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B31%5D.png"><br>三尖型中颊尖与近中舌尖距离为5mm<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B32%5D.png"><br>颊舌尖垂直向落差大。<br>边缘嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B33%5D.png"><br>主嵴<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B34%5D.png"><br>窝沟<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B35%5D.png"><br>下颌第二前磨牙（H形）<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B36%5D.png"><br>下颌第二前磨牙三种形态<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B37%5D.png"></p>
<p>第6章 通过去除来发现<br>后牙形态的基本结构——牙尖<br>每一个个体牙齿的自然形态都是由弯曲的线条组成的。同时那些看不见的背景是由一些直线或者以三角形为基础的几何形态组成的。<br>牙尖的构成<br>牙尖顶，发出4条嵴，形成4个斜面。<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B38%5D.png"><br>通过去除发现<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B39%5D.png"><br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B40%5D.png"></p>
<p>上4<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B41%5D.png"><br>上5<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B42%5D.png"><br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B43%5D.png"></p>
<p>下4<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B44%5D.png"><br>下5<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B45%5D.png"><br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B46%5D.png"><br>记忆的是第三张图。<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B47%5D.png"><br>磨牙组<br>上6<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B48%5D.png"><br>上7（四尖型）<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B49%5D.png"><br>上7 （三尖型）<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B50%5D.png"><br>下6<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B51%5D.png"><br>下7 （五尖型）<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B52%5D.png"><br>下7 （四尖型）<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B53%5D.png"></p>
<p>练习方法，描红。<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B54%5D.png"><br>立体的牙体结构<br>牙尖、沟<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B55%5D.png"><br>用红蓝铅笔画<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B56%5D.png"><br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B57%5D.png"><br>画各个斜面<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B58%5D.png"></p>
<p>第7章 AFG堆塑技术四步法<br>重塑流程，从牙尖开始，延伸至斜面，边缘嵴，最后恢复细节。<br>1.确定牙尖顶点（根据数据推算它们的位置）<br>2.从牙尖顶点向下，沿着既定方向朝着牙齿内部延伸，得到一条原始的主嵴线条。<br>3.完成主嵴（主嵴汇聚形成主沟）<br>4.模仿天然牙的解剖形态细节——副沟</p>
<p>总结<br>一、第5章：每颗牙齿的不可见背景<br>⑧下颌磨牙组外形轮廓+内部结构<br>⑨前磨牙组外形轮廓+内部结构<br>二、第6章：通过去除来发现<br>①揭开面纱（科学不是发明，是发现）<br>②通过去除来发现<br>③后牙形态的基本机构——牙尖<br>④通过去除来发现——前磨牙组<br>⑤通过去除来发现——磨牙组<br>⑥牙齿形态摹影练习法（如何在纸上实现立体的牙齿分析）<br>⑦彩色分析图的绘制及意义（点、线、面分析）<br>三、第7章：AFG堆塑技术四步法<br>①通过去除来发现，通过发现来重塑<br>②四步法（牙尖-主嵴-斜面-副嵴）<br>③记忆过程（堆塑过程的立体分析）<br>④上6树脂堆塑</p>
<p>作业：上6彩色分析图<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B59%5D.png"><br>没那么多颜色的彩笔，用符号代替了。<br><img src="https://zymblog-1258069789.cos.ap-chengdu.myqcloud.com/blog0152-2019rdh/030/Image%20%5B60%5D.png"></p>
<p>我发文章的三个地方，欢迎大家在朋友圈等地方分享，欢迎点“在看”。<br>我的个人博客地址：<a href="https://zwdnet.github.io/">https://zwdnet.github.io</a><br>我的知乎文章地址： <a target="_blank" rel="noopener" href="https://www.zhihu.com/people/zhao-you-min/posts">https://www.zhihu.com/people/zhao-you-min/posts</a><br>我的微信个人订阅号：赵瑜敏的口腔医学学习园地</p>
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